>>The above functions are marked as deprecated in the header file ippi.h in Ipp 8.0.1
>>
>>However the documentation says that only the integer version has been deprecated.
>>
>>Which is true?

Header files have the most up-to-date information and it looks like documentation is incorrect ( not up-to-date ). I always trust to what I see in a header file but, of course, some errors are also possible.